Lets assume it is 1100 (don't use the same user ID for all users!!!), then on each machines do

useradd -g users -u 1100 -p <crypt output> myuser

Alternatively, consider using newusers which is based on a similar
format as the passwd file (man 5 passwd).

NOTE: We should probably make a script for this in the future or use some other authetication model.

Adding a user to other groups:
Example: Adding myuser to the group wheel

usermod -a -G wheel myuser

Creating student users

Students doing projects within the image group can get access to the cluster, provided that they have the need for the computational resources or access to data on the cluster. The project supervisor must approve this access. The student account will only be active for the duration of the project.

A student user should always be in the group 'students'.

Example: How to create the user myuser
On imagediskserver3 as root you can create a new account with the name myuser in the group
'students' with home directory in /home/myuser by:

Automatic synchronization of passwords with the diku system

Old Cluster

Non!

New cluster

We use the KU login system (a.k.a. the Swedish license plate), so if you change your KU password then this is automatically updated on these machines.

Backup

Currently there is no backup of the cluster. The only safety lies in the use of RAID 5 on all disk servers, which in theory should
provide tolerance towards one faulty disk per disk server. We are working on a backup solution.